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Modifier & traduire [exit edit]Move your mouse over text: the text highlights and you click and edit it directly. Titre de la page: Navigation title: Keywords: Nipesotsu-Maruyama volcanstratovolcanoes, lava domes 2013 m / 6,604 ft
Hokkaido, Japon, 43.45°N / 143.04°E Condition actuelle: en sommeil (1 sur 5)
Style éruptif tipique: effusive (lava domes)
Eruptions du volcan Nipesotsu-Maruyama: 1898, 1700 BC (?) Derniers séismes proches:
The only historic eruption was a minor phreatic explosion from Maru-yama ("round mountain") lava dome in 1898. Fumaroles are located at the summit crater. Introduction:The Nipesotsu-Maruyama volcano group (ニペソツ・丸山火山群 Nipesotsu-Maruyama-kazangun) contains andesitic-to-rhyolitic stratovolcanoes and lava domes which are aligned NW-SE.They overlap the SW rim and SW caldera floor of the Pleistocene Tokachimitsumata caldera. The highest peak in the complex is 2013-m-high Nipesotsu-yama (ニペソツ山) stratovolcano, which was active about 400,000-200,000 years ago. The Maruyama stratovolcano and lava dome at the southern end of the complex were discovered to be a Quaternary volcano only in 1989. It is also referred to as Higashi-Tokachi-Maruyama to distinguish it from several other volcanoes named Maru-yama including the Maru-yama lava dome which erupted in 1898. (Source: Smithsonian / GVP volcano information) |
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